##  Copyright(C) 2012-2020 Intel Corporation. All Rights Reserved.
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

if( Linux )
  set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
  set(THREADS_PREFER_PTHREAD_FLAG TRUE)
endif()

find_package(Threads REQUIRED)

if( Linux )
  find_package(PkgConfig REQUIRED)

  # required:
  pkg_check_modules(PKG_LIBVA     REQUIRED libva>=1.9 IMPORTED_TARGET)
  pkg_check_modules(PKG_LIBDRM    REQUIRED libdrm>=2.4 IMPORTED_TARGET)
  pkg_check_modules(PKG_LIBVA_DRM REQUIRED libva-drm>=1.9 IMPORTED_TARGET)

  add_library(va INTERFACE)
  target_link_libraries(va
    INTERFACE
      PkgConfig::PKG_LIBVA
      PkgConfig::PKG_LIBDRM
      PkgConfig::PKG_LIBVA_DRM
  )

endif()

